Finding the Fourth Proportional to 328.50, 492.83 and 100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328.50 : 492.83 = 100.50 : x
2. Step 2: Convert to fraction form
   328.50/492.83 = 100.50/x
3. Step 3: Cross multiply
   328.50x = 492.83 × 100.50
4. Step 4: Simplify right side
   328.50x = 49,529.42
5. Step 5: Solve for x
   x = 49,529.42/328.50
6. Step 6: Final answer
   x = 150.77